Arroyo Willow May 2026

The ( Salix lasiolepis ) is a foundational species of the western North American landscape, particularly within the riparian ecosystems of California and the Southwest. Known to the Mutsun Ohlone people as Tarhasan , this resilient tree has provided sustainable resources—from architectural framework for thatched houses to medicinal pain relief derived from its bark—for countless generations. Ecological Role and Characteristics

Arroyo willows are most commonly found in , wetlands, and alongside ephemeral creeks. arroyo willow

: They typically present as large shrubs or small trees with slender, graceful branches. Their leaves are often described as having a waxy texture, distinguishing them from other species like the Sandbar or Black willow. The ( Salix lasiolepis ) is a foundational

The Arroyo Willow is often recognized as a due to its extensive support of local biodiversity. : They typically present as large shrubs or

: It provides essential foraging grounds for birds like the Least Bell's Vireo and serves as a vital habitat for various pollinators.

: They frequently co-dominate landscapes with species such as the Coast Live Oak and Black Cottonwood.